Editing Photographic processing (section)

=== Small scale processing ===
[[Image:Light trap tank.jpg|right|thumb|200px|A cut-away illustration of a typical light-trap tank used in small scale developing]]
In amateur processing, the film is removed from the camera and wound onto a [[developing tank|reel]] in complete darkness (usually inside a [[darkroom]] with the [[safelight]] turned off or a lightproof bag with arm holes).  The reel holds the film in a spiral shape, with space between each successive loop so the chemicals may flow freely across the film's surfaces.  The reel is placed in a specially designed light-proof tank (called a daylight processing tank or a light-trap tank) where it is retained until final washing is complete.

Sheet films can be processed in trays, in hangers (which are used in deep tanks), or rotary processing drums. Each sheet can be developed individually for special requirements. [[Stand development]], long development in dilute developer without agitation, is occasionally used.